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CSharp · Console

/Program.cs

using System;
using System.Linq;
using System.Xml;
using System.Xml.Linq;
using System.Xml.XPath;
					
public class Program
{
	public static void Main()
	{
		var xml = @"
		         <ShipmentHeader>
            <DocumentID>62017836-1</DocumentID>
            <DocumentReference type=""CustomerSuppliedReference"">
               <DocumentID>
                  <ID>10532</ID>
               </DocumentID>
            </DocumentReference>
            <Status>
               <Code/>
               <Description languageID=""en-us""/>
            </Status>
            <ActualShipDateTime>2023-06-07T09:16:33-04:00</ActualShipDateTime>
            <ShippingMethod>CHEAPEST METHOD W/FIRST CLASS</ShippingMethod>
            <DocumentReference type=""TrackingNumber"">
               <TrackingNumber>9200190233107605458375</TrackingNumber>
            </DocumentReference>
         </ShipmentHeader>";
		
		XmlDocument xmlDoc = new XmlDocument();
		xmlDoc.LoadXml(xml);

		XmlNodeList trackingNumberNodes = xmlDoc.SelectNodes("//DocumentReference[@type='TrackingNumber']/TrackingNumber");
		foreach (XmlNode node in trackingNumberNodes)
		{
			Console.WriteLine(node.InnerText);
		}
	}
}